Home › California › Lake County › All bridges

Every bridge in Lake County, California

Name: Every bridge in Lake County, California
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

131 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Lake County, California, has 131 bridges in the 2025 National Bridge Inventory: 40 rated good, 79 fair, and 12 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
State Route 53 over Seigler Creek	1952	16,500	Fair
State Route 29 over Adobe Creek	1966	12,100	Good
State Route 29 over Hill Creek	1966	12,100	Good
State Route 29 over Kelsey Creek	1966	12,100	Good
State Route 29 over Manning Creek	1966	12,100	Good
State Route 29 over Lupiyoma Creek	1955	10,900	Fair
State Route 29 over Putah Creek	2003	10,900	Good
State Route 29 over Saint Helena Creek	1934	10,900	Good
State Route 20 over Bachelor Creek	2022	10,600	Good
State Route 29 over Seigler Creek	1991	10,600	Fair
State Route 29 over Cole Creek	1959	10,350	Fair
State Route 29 over Coyote Creek	1948	9,000	Fair
State Route 20 over Morrison Creek	1933	8,900	Fair
SR 53 over Cache Creek	1997	8,500	Fair
State Route 29 over Saint Helena Creek	1947	8,300	Good
SR 53 over Cache Creek	1997	8,250	Fair
State Route 20 over Clover Creek	1975	8,000	Good
State Route 20 over Middle Creek	1959	8,000	Fair
State Route 20 over Polk Jones Cattlepass	1955	8,000	Fair
State Route 29 over Saint Helena Creek	1947	7,000	Good
State Route 29 over 11TH Street	1972	6,725	Fair
State Route 29 over 11TH Street	1972	6,725	Good
State Route 29 over Hill Road	1972	6,725	Good
State Route 29 over Hill Road	1972	6,725	Good
State Route 29 over Martin Street	1972	6,725	Fair
State Route 29 over Martin Street	1972	6,725	Fair
State Route 20 over North Fork Cache Creek	1989	6,300	Good
State Route 20 over Phipps Creek	1993	6,300	Fair
State Route 29 over Robinson Creek	1947	5,700	Fair
State Route 29 over Scotts Creek	1989	5,700	Fair
Nice-lucerne Cutof over Rodman Narrows(clear Lak	1958	5,315	Poor
Main Street over Kelsey Creek	1946	3,502	Fair
State Route 175 over Dry Creek	1952	3,150	Fair
State Route 175 over Putah Creek	1964	3,150	Good
State Route 175 over Putah Creek	1994	3,150	Fair
Big Valley Rd over Mcgough Slough	1963	3,116	Fair
Big Valley Rd over Adobe Creek	1963	2,962	Fair
State Route 175 over Kelsey Creek	2023	2,900	Good
State Route 29 over Lucerne Cut-off	1972	2,850	Good
State Route 29 over Lucerne Cut-off	1972	2,850	Fair
Scotts Valley Road over Scotts Creek	1960	2,140	Fair
Soda Bay Rd over Kelsey Creek	1961	2,108	Fair
Soda Bay Rd over Adobe Creek	1957	2,060	Fair
Soda Bay Rd over Cole Creek	2015	2,060	Good
Butts Cyn Rd over Bucksnort Creek	1969	1,900	Fair
Merritt Road over Kelsey Creek	2008	1,870	Fair
Morgan Valley Rd over Copsey Creek	1965	1,800	Fair
Lake St over Cache Creek	1987	1,700	Fair
Park Way over State Route 29	1972	1,615	Fair
Soda Bay Rd over Manning Creek	1956	1,545	Fair
Lakeport Blvd over State Route 29	1972	1,300	Fair
Bottle Rock Road over Cole Creek	1971	1,205	Fair
Burns Valley Rd over Burns Valley Creek	1990	1,200	Fair
Konocti Rd over Cole Creek	1987	1,155	Fair
Lakeshore Blvd over Lyons Creek	1931	1,066	Fair
Elk Mtn Rd over Overflow Channel	1958	1,061	Fair
Martin St over Forbes Creek	1970	1,046	Fair
Big Valley Rd over Hill Creek	1963	1,038	Fair
Elk Mtn Rd over West Fork Middle Creek	1966	1,000	Poor
Big Canyon Rd over Putah Creek	1961	820	Fair
Harbin Springs Rd over Harbin Creek	2018	690	Good
Old State Highway over Burns Valley Creek	1999	640	Good
E Hghlnd Spring Rd over Highland Creek	1960	618	Fair
Scotts Valley Road over Hendricks Creek	1925	594	Fair
Socrates Mine Rd over Gunning Creek	1981	546	Fair
Spruce Grove Road over Copsey Creek	1995	512	Fair
Hill Road East over State Route 29	1972	485	Fair
First Street over Clover Creek	1930	400	Good
Island Dr over Clearlake Oaks Channel	1985	390	Good
Road M1 over Eel River	1971	350	Poor
New Long Valley Rd over Long Valley Creek	1984	346	Fair
Pitney Ln over Alley Creek	1958	321	Good
Konocti over Schindler Creek	1965	320	Fair
Road M1 over Salmon Creek	1976	318	Good
Rancheria Road over Middle Creek	1958	315	Fair
Road M01 over Smokehouse Crk	1976	313	Good
Mathews Road over Manning Creek	2017	310	Good
Finley East Road over Adobe Creek	1970	309	Fair
Big Canyon Road over Big Canyon Creek	1930	308	Poor
Big Canyon Road over Big Canyon Creek	1930	304	Poor
Jessie St over Seigler Canyon Creek	1987	300	Fair
Road M1 over Benmore Creek	1970	300	Fair
Ackley Rd over Manning Creek	2015	250	Good
Sylar Lane over Cole Creek	1965	250	Fair
Wolf Creek Road over Wolf Creek	1967	220	Fair
Witter Springs Rd over Cooper Creek	1935	212	Fair
Big Canyon Rd over Big Canyon Creek	1956	208	Poor
Big Canyon Rd over Big Canyon Creek	1930	208	Fair
Argonaut Road over Adobe Creek	1966	206	Fair
Bell Park Ave over Seigler Creek	1966	200	Fair
Copsey Creek Way over Copsey Creek	1965	200	Fair
Elk Mountain Road over Middle Creek	1959	175	Fair
Elk Mountain Rd over Soda Creek	1979	169	Poor
Anderson Springs R over Anderson Creek	1940	154	Fair
Harbin Springs Rd over Harbin Creek	1930	152	Good
Blue Heron Court over Clear Lake Oaks Channel	1965	150	Fair
Konocti View over Clear Lake Oaks Channel	1965	150	Fair
Clayton Creek Rd over Clayton Creek	2021	130	Good
Witter Springs Rd over Cooper Creek	1935	123	Fair
Clark Drive over Cole Creek	1940	114	Fair
Wardlaw St over Saint Helena Creek	1908	114	Fair
Bartlett Sprgs Rd over Cache Creek	1982	108	Fair
Bartlett Sprgs Rd over Stanton Creek	1960	108	Fair
Bartlett Sprngs Rd over Bartlett Creek	1950	108	Poor
Boat Launch Rmp Rd over Cole Creek	1970	104	Fair
Rose Anderson Rd over Anderson Creek	1945	104	Fair
Bartlett Sprgs Rd over Kilpepper Creek	1960	103	Fair
Bartlett Sprngs Rd over Complexion Creek	1960	103	Fair
Bartlett Spring Rd over Bartlett Creek	1960	80	Fair
Bridge Arbor N Rd over Clover Creek	1931	80	Good
Perini Road over Seigler Canyon Creek	2007	75	Good
Bridge Arbor Rd over Robinson Creek	1925	65	Fair
Blue Heron Court over Clear Lake Oaks Channel	1965	60	Fair
Eickhoff Rd over Scotts Creek	1984	56	Fair
Highland Spring Rd over Highland Creek	2015	52	Good
Hilderbrand Dr over Saint Helena Creek	2014	50	Good
Road over Stream	1962	50	Poor
Road over Trout Creek	2016	50	Good
Mockingbird Lane over Robinson Creek	2018	46	Good
Quail Trail over Wolf Creek	1967	36	Fair
Foard Rd over Anderson Creek	2017	30	Good
Wolf Creek Road over Wolf Creek	1967	26	Poor
34013: Hunting Cre over Hunting Creek	2003	25	Fair
Road 16n30 over Alley Creek	1972	25	Good
S Cow Mtn -8 Mile over Panther Creek	2000	25	Poor
Peterson Lane over Adobe Creek	1950	23	Fair
Dry Creek Rd over Dry Creek	2017	20	Good
Road M01 over Rattlesnake Creek	1966	20	Fair
Road M10 over Bear Creek	1973	20	Good
Chalk Mtn Rd over North Fork Cache Creek	1967	15	Poor
Parnum Road (US20 over North Fork Cache Creek	2021	1	Good

Source: FHWA National Bridge Inventory, 2025.

Lake County bridge conditions · California bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.